NPPES file of Aug 9, 2026

Chiropractor in California

11,498 NPPES records list chiropractor with a practice address in California, 30 per 100,000 residents, the 22nd highest rate of 51. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 151 of 230.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 111N00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Diego has the most, 531

  1. San Diego531
  2. Los Angeles525
  3. San Jose371
  4. San Francisco326
  5. Sacramento160

Chiropractor records in California

  1. Terrence O'Collins, D.C.Clovis, CA 936121609093350
  2. Michael O'Connell, DCLodi, CA 952401427168509
  3. Barry O'Connor, D.C.La Mirada, CA 906381013105832
  4. Blake O'Connor, D.C.Temecula, CA 925901649369612
  5. Nicholas O'Connor, DCSan Diego, CA 921171659827772
  6. Robert O'Dell, D.C.Santa Barbara, CA 931091851465306
  7. Myles O'Donnell, DCOakland, CA 946091811623499
  8. Sean O'Grady, D.C.San Mateo, CA 944021326369224
  9. Sarah O'Hara, DCGoleta, CA 931171386350833
  10. Michael O'Hern, D.C.Los Angeles, CA 900271972308427
  11. Diane O'Keefe, D.C.San Francisco, CA 941071124359484
  12. Heather O'Moore, DCOakland, CA 946181770321945
  13. James O'Neal, D.C.Santa Rosa, CA 954011104985068
  14. Claire O'Neill, DCLos Angeles, CA 900391598841553
  15. Timothy O'Regan, D.C.San Diego, CA 921231316217714
  16. Constance O'ReillyBurbank, CA 915021770690299
  17. Beth O'Rourke, D.C.Carson, CA 907461740505478
  18. James O'Toole, D.C.Mission Viejo, CA 926921245264746
  19. Nora Oakley, D.C.Seal Beach, CA 907401952490922
  20. Michael Oakson, DCMission Viejo, CA 926911578411625
  21. Robert Oates, DCChico, CA 959261629145248
  22. Jon Oatey, D.C.Los Angeles, CA 900351508998758
  23. Kirstin Oaxaca, DCSacramento, CA 958161558289686
  24. Richard Oberleitner, D.C.Grass Valley, CA 959451710202767
  25. Ronald Oberstein, D.C.San Diego, CA 921171619015914
  26. Anthony Oberti, D.C.Roseville, CA 956611750316485
  27. Raymond Oca, DCLos Alamitos, CA 907201316061930
  28. Daniela Ocasio, D.C.Pasadena, CA 911031861576118
  29. Jose Ocasio, D.C.Pasadena, CA 911071437233798
  30. Salvador Oceguera, DCOakland, CA 946181316876279
  31. Richard Ochart, D.C.Colton, CA 923241992836696
  32. Raul Ochoa, D.C.San Ysidro, CA 921731518401827
  33. Angel Ochoa-Rea, DCSan Diego, CA 921041396201109
  34. Kristin Ochs, DCVisalia, CA 932771194156703
  35. Stefanie Ochs, D.C.San Jose, CA 951281164694949
  36. Luis Ocon, D.C.Salinas, CA 939011700076528
  37. Kathryn Oconnor, DCPetaluma, CA 949521508997602
  38. Nicholas Oconnor, DCNewport Beach, CA 926601831584960
  39. Susan Ocopnick, D.C. R.N.Solana Beach, CA 920751992095053
  40. Lucas Odahlen, D.C.Lake Elsinore, CA 925301881734952
  41. Michael Odell, D.C.Ramona, CA 920651467522052
  42. Niccole OdellSan Diego, CA 921311073680633
  43. Rheamay OdvinaSeal Beach, CA 907401770003410
  44. Mark Oehlschlaeger, D.C.Oakhurst, CA 936441760401343
  45. Mahnaz Ogabian, DCSan Jose, CA 951261982714267
  46. Rie Ogata, D.C.Cypress, CA 906301972590925
  47. Andrew Oh, DCMoreno Valley, CA 925531033960497
  48. Andy Oh, D.C., L.AC.Los Angeles, CA 900051386918928
  49. Joanne Oh, D. C.Pasadena, CA 911041538991963
  50. Johnny Oh, D.CDowney, CA 902411649497819

Source: CMS NPPES, primary taxonomy 111N00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 22 of 51 per resident

  1. Michigan30
  2. Pennsylvania30
  3. Maine30
  4. California30
  5. Georgia29
  6. Wyoming29
  7. 50 states and D.C.29

Source: CMS NPPES, primary taxonomy 111N00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

7.0% of these records appear in a Medicare file, against 16.9% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California7.0%
  2. United States16.9%

Chiropractor records in California, measured

  • In a Medicare file809 of 11,498 · 7.0% here, 16.9% nationally
  • In the CMS Doctors and Clinicians file2,911 · 25.3% here, 39.8% nationally
  • Not updated in five years or more8,830 · 76.8% here, 72.3% nationally
  • Median graduation year1999 · the 2,907 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 111N00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

11,498 NPPES records list chiropractor (111N00000X) as their primary taxonomy with a practice address in California: 30 per 100,000 residents against 29 nationally (50 states and D.C.). San Diego has 531 of them (5%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Texas6,979
  2. Florida6,967
  3. New York4,573
  4. Illinois4,524

States with a similar rate per 100,000

  1. Georgia29.5
  2. Wyoming29.3
  3. Maine29.9
  4. Pennsylvania30.4

The largest states

  1. Texas6,979
  2. Florida6,967
  3. New York4,573
  4. Illinois4,524
  5. Pennsylvania3,934

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.